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1# SPDX-License-Identifier: GPL-2.0
2include ../../../build/Build.include
3include ../../../scripts/Makefile.arch
4include ../../../scripts/Makefile.include
5
6CXX ?= $(CROSS_COMPILE)g++
7
8CURDIR := $(abspath .)
9TOOLSDIR := $(abspath ../../..)
10LIBDIR := $(TOOLSDIR)/lib
11BPFDIR := $(LIBDIR)/bpf
12TOOLSINCDIR := $(TOOLSDIR)/include
13BPFTOOLDIR := $(TOOLSDIR)/bpf/bpftool
14APIDIR := $(TOOLSINCDIR)/uapi
15ifneq ($(O),)
16GENDIR := $(O)/include/generated
17else
18GENDIR := $(abspath ../../../../include/generated)
19endif
20GENHDR := $(GENDIR)/autoconf.h
21PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
22
23ifneq ($(wildcard $(GENHDR)),)
24 GENFLAGS := -DHAVE_GENHDR
25endif
26
27BPF_GCC ?= $(shell command -v bpf-gcc;)
28SAN_CFLAGS ?=
29SAN_LDFLAGS ?= $(SAN_CFLAGS)
30RELEASE ?=
31OPT_FLAGS ?= $(if $(RELEASE),-O2,-O0)
32
33LIBELF_CFLAGS := $(shell $(PKG_CONFIG) libelf --cflags 2>/dev/null)
34LIBELF_LIBS := $(shell $(PKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
35
36CFLAGS += -g $(OPT_FLAGS) -rdynamic \
37 -Wall -Werror \
38 $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS) \
39 -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
40 -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
41LDFLAGS += $(SAN_LDFLAGS)
42LDLIBS += $(LIBELF_LIBS) -lz -lrt -lpthread
43
44ifneq ($(LLVM),)
45# Silence some warnings when compiled with clang
46CFLAGS += -Wno-unused-command-line-argument
47endif
48
49# Check whether bpf cpu=v4 is supported or not by clang
50ifneq ($(shell $(CLANG) --target=bpf -mcpu=help 2>&1 | grep 'v4'),)
51CLANG_CPUV4 := 1
52endif
53
54# Order correspond to 'make run_tests' order
55TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test_progs \
56 test_dev_cgroup \
57 test_sock test_sockmap get_cgroup_id_user \
58 test_cgroup_storage \
59 test_tcpnotify_user test_sysctl \
60 test_progs-no_alu32
61TEST_INST_SUBDIRS := no_alu32
62
63# Also test bpf-gcc, if present
64ifneq ($(BPF_GCC),)
65TEST_GEN_PROGS += test_progs-bpf_gcc
66TEST_INST_SUBDIRS += bpf_gcc
67endif
68
69ifneq ($(CLANG_CPUV4),)
70TEST_GEN_PROGS += test_progs-cpuv4
71TEST_INST_SUBDIRS += cpuv4
72endif
73
74TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
75TEST_FILES = xsk_prereqs.sh $(wildcard progs/btf_dump_test_case_*.c)
76
77# Order correspond to 'make run_tests' order
78TEST_PROGS := test_kmod.sh \
79 test_xdp_redirect.sh \
80 test_xdp_redirect_multi.sh \
81 test_xdp_meta.sh \
82 test_xdp_veth.sh \
83 test_offload.py \
84 test_sock_addr.sh \
85 test_tunnel.sh \
86 test_lwt_seg6local.sh \
87 test_lirc_mode2.sh \
88 test_skb_cgroup_id.sh \
89 test_flow_dissector.sh \
90 test_xdp_vlan_mode_generic.sh \
91 test_xdp_vlan_mode_native.sh \
92 test_lwt_ip_encap.sh \
93 test_tcp_check_syncookie.sh \
94 test_tc_tunnel.sh \
95 test_tc_edt.sh \
96 test_xdping.sh \
97 test_bpftool_build.sh \
98 test_bpftool.sh \
99 test_bpftool_metadata.sh \
100 test_doc_build.sh \
101 test_xsk.sh \
102 test_xdp_features.sh
103
104TEST_PROGS_EXTENDED := with_addr.sh \
105 with_tunnels.sh ima_setup.sh verify_sig_setup.sh \
106 test_xdp_vlan.sh test_bpftool.py
107
108# Compile but not part of 'make run_tests'
109TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
110 flow_dissector_load test_flow_dissector test_tcp_check_syncookie_user \
111 test_lirc_mode2_user xdping test_cpp runqslower bench bpf_testmod.ko \
112 xskxceiver xdp_redirect_multi xdp_synproxy veristat xdp_hw_metadata \
113 xdp_features
114
115TEST_GEN_FILES += liburandom_read.so urandom_read sign-file uprobe_multi
116
117# Emit succinct information message describing current building step
118# $1 - generic step name (e.g., CC, LINK, etc);
119# $2 - optional "flavor" specifier; if provided, will be emitted as [flavor];
120# $3 - target (assumed to be file); only file name will be emitted;
121# $4 - optional extra arg, emitted as-is, if provided.
122ifeq ($(V),1)
123Q =
124msg =
125else
126Q = @
127msg = @printf ' %-8s%s %s%s\n' "$(1)" "$(if $(2), [$(2)])" "$(notdir $(3))" "$(if $(4), $(4))";
128MAKEFLAGS += --no-print-directory
129submake_extras := feature_display=0
130endif
131
132# override lib.mk's default rules
133OVERRIDE_TARGETS := 1
134override define CLEAN
135 $(call msg,CLEAN)
136 $(Q)$(RM) -r $(TEST_GEN_PROGS)
137 $(Q)$(RM) -r $(TEST_GEN_PROGS_EXTENDED)
138 $(Q)$(RM) -r $(TEST_GEN_FILES)
139 $(Q)$(RM) -r $(EXTRA_CLEAN)
140 $(Q)$(MAKE) -C bpf_testmod clean
141 $(Q)$(MAKE) docs-clean
142endef
143
144include ../lib.mk
145
146SCRATCH_DIR := $(OUTPUT)/tools
147BUILD_DIR := $(SCRATCH_DIR)/build
148INCLUDE_DIR := $(SCRATCH_DIR)/include
149BPFOBJ := $(BUILD_DIR)/libbpf/libbpf.a
150ifneq ($(CROSS_COMPILE),)
151HOST_BUILD_DIR := $(BUILD_DIR)/host
152HOST_SCRATCH_DIR := $(OUTPUT)/host-tools
153HOST_INCLUDE_DIR := $(HOST_SCRATCH_DIR)/include
154else
155HOST_BUILD_DIR := $(BUILD_DIR)
156HOST_SCRATCH_DIR := $(SCRATCH_DIR)
157HOST_INCLUDE_DIR := $(INCLUDE_DIR)
158endif
159HOST_BPFOBJ := $(HOST_BUILD_DIR)/libbpf/libbpf.a
160RESOLVE_BTFIDS := $(HOST_BUILD_DIR)/resolve_btfids/resolve_btfids
161RUNQSLOWER_OUTPUT := $(BUILD_DIR)/runqslower/
162
163VMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \
164 $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
165 ../../../../vmlinux \
166 /sys/kernel/btf/vmlinux \
167 /boot/vmlinux-$(shell uname -r)
168VMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS))))
169ifeq ($(VMLINUX_BTF),)
170$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)")
171endif
172
173# Define simple and short `make test_progs`, `make test_sysctl`, etc targets
174# to build individual tests.
175# NOTE: Semicolon at the end is critical to override lib.mk's default static
176# rule for binaries.
177$(notdir $(TEST_GEN_PROGS) \
178 $(TEST_GEN_PROGS_EXTENDED) \
179 $(TEST_CUSTOM_PROGS)): %: $(OUTPUT)/% ;
180
181# sort removes libbpf duplicates when not cross-building
182MAKE_DIRS := $(sort $(BUILD_DIR)/libbpf $(HOST_BUILD_DIR)/libbpf \
183 $(BUILD_DIR)/bpftool $(HOST_BUILD_DIR)/bpftool \
184 $(HOST_BUILD_DIR)/resolve_btfids \
185 $(RUNQSLOWER_OUTPUT) $(INCLUDE_DIR))
186$(MAKE_DIRS):
187 $(call msg,MKDIR,,$@)
188 $(Q)mkdir -p $@
189
190$(OUTPUT)/%.o: %.c
191 $(call msg,CC,,$@)
192 $(Q)$(CC) $(CFLAGS) -c $(filter %.c,$^) $(LDLIBS) -o $@
193
194$(OUTPUT)/%:%.c
195 $(call msg,BINARY,,$@)
196 $(Q)$(LINK.c) $^ $(LDLIBS) -o $@
197
198# LLVM's ld.lld doesn't support all the architectures, so use it only on x86
199ifeq ($(SRCARCH),$(filter $(SRCARCH),x86 riscv))
200LLD := lld
201else
202LLD := ld
203endif
204
205# Filter out -static for liburandom_read.so and its dependent targets so that static builds
206# do not fail. Static builds leave urandom_read relying on system-wide shared libraries.
207$(OUTPUT)/liburandom_read.so: urandom_read_lib1.c urandom_read_lib2.c liburandom_read.map
208 $(call msg,LIB,,$@)
209 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
210 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) \
211 $(filter %.c,$^) $(filter-out -static,$(LDLIBS)) \
212 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
213 -Wl,--version-script=liburandom_read.map \
214 -fPIC -shared -o $@
215
216$(OUTPUT)/urandom_read: urandom_read.c urandom_read_aux.c $(OUTPUT)/liburandom_read.so
217 $(call msg,BINARY,,$@)
218 $(Q)$(CLANG) $(CLANG_TARGET_ARCH) \
219 $(filter-out -static,$(CFLAGS) $(LDFLAGS)) $(filter %.c,$^) \
220 -lurandom_read $(filter-out -static,$(LDLIBS)) -L$(OUTPUT) \
221 -fuse-ld=$(LLD) -Wl,-znoseparate-code -Wl,--build-id=sha1 \
222 -Wl,-rpath=. -o $@
223
224$(OUTPUT)/sign-file: ../../../../scripts/sign-file.c
225 $(call msg,SIGN-FILE,,$@)
226 $(Q)$(CC) $(shell $(PKG_CONFIG) --cflags libcrypto 2> /dev/null) \
227 $< -o $@ \
228 $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null || echo -lcrypto)
229
230$(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(RESOLVE_BTFIDS) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch])
231 $(call msg,MOD,,$@)
232 $(Q)$(RM) bpf_testmod/bpf_testmod.ko # force re-compilation
233 $(Q)$(MAKE) $(submake_extras) RESOLVE_BTFIDS=$(RESOLVE_BTFIDS) -C bpf_testmod
234 $(Q)cp bpf_testmod/bpf_testmod.ko $@
235
236DEFAULT_BPFTOOL := $(HOST_SCRATCH_DIR)/sbin/bpftool
237ifneq ($(CROSS_COMPILE),)
238CROSS_BPFTOOL := $(SCRATCH_DIR)/sbin/bpftool
239TRUNNER_BPFTOOL := $(CROSS_BPFTOOL)
240USE_BOOTSTRAP := ""
241else
242TRUNNER_BPFTOOL := $(DEFAULT_BPFTOOL)
243USE_BOOTSTRAP := "bootstrap/"
244endif
245
246$(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL) $(RUNQSLOWER_OUTPUT)
247 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \
248 OUTPUT=$(RUNQSLOWER_OUTPUT) VMLINUX_BTF=$(VMLINUX_BTF) \
249 BPFTOOL_OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
250 BPFOBJ_OUTPUT=$(BUILD_DIR)/libbpf \
251 BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) \
252 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
253 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' && \
254 cp $(RUNQSLOWER_OUTPUT)runqslower $@
255
256TEST_GEN_PROGS_EXTENDED += $(TRUNNER_BPFTOOL)
257
258$(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(BPFOBJ)
259
260TESTING_HELPERS := $(OUTPUT)/testing_helpers.o
261CGROUP_HELPERS := $(OUTPUT)/cgroup_helpers.o
262UNPRIV_HELPERS := $(OUTPUT)/unpriv_helpers.o
263TRACE_HELPERS := $(OUTPUT)/trace_helpers.o
264JSON_WRITER := $(OUTPUT)/json_writer.o
265CAP_HELPERS := $(OUTPUT)/cap_helpers.o
266
267$(OUTPUT)/test_dev_cgroup: $(CGROUP_HELPERS) $(TESTING_HELPERS)
268$(OUTPUT)/test_skb_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
269$(OUTPUT)/test_sock: $(CGROUP_HELPERS) $(TESTING_HELPERS)
270$(OUTPUT)/test_sock_addr: $(CGROUP_HELPERS) $(TESTING_HELPERS)
271$(OUTPUT)/test_sockmap: $(CGROUP_HELPERS) $(TESTING_HELPERS)
272$(OUTPUT)/test_tcpnotify_user: $(CGROUP_HELPERS) $(TESTING_HELPERS) $(TRACE_HELPERS)
273$(OUTPUT)/get_cgroup_id_user: $(CGROUP_HELPERS) $(TESTING_HELPERS)
274$(OUTPUT)/test_cgroup_storage: $(CGROUP_HELPERS) $(TESTING_HELPERS)
275$(OUTPUT)/test_sock_fields: $(CGROUP_HELPERS) $(TESTING_HELPERS)
276$(OUTPUT)/test_sysctl: $(CGROUP_HELPERS) $(TESTING_HELPERS)
277$(OUTPUT)/test_tag: $(TESTING_HELPERS)
278$(OUTPUT)/test_lirc_mode2_user: $(TESTING_HELPERS)
279$(OUTPUT)/xdping: $(TESTING_HELPERS)
280$(OUTPUT)/flow_dissector_load: $(TESTING_HELPERS)
281$(OUTPUT)/test_maps: $(TESTING_HELPERS)
282$(OUTPUT)/test_verifier: $(TESTING_HELPERS) $(CAP_HELPERS) $(UNPRIV_HELPERS)
283$(OUTPUT)/xsk.o: $(BPFOBJ)
284
285BPFTOOL ?= $(DEFAULT_BPFTOOL)
286$(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
287 $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool
288 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
289 ARCH= CROSS_COMPILE= CC="$(HOSTCC)" LD="$(HOSTLD)" \
290 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
291 OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \
292 LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
293 LIBBPF_DESTDIR=$(HOST_SCRATCH_DIR)/ \
294 prefix= DESTDIR=$(HOST_SCRATCH_DIR)/ install-bin
295
296ifneq ($(CROSS_COMPILE),)
297$(CROSS_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \
298 $(BPFOBJ) | $(BUILD_DIR)/bpftool
299 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \
300 ARCH=$(ARCH) CROSS_COMPILE=$(CROSS_COMPILE) \
301 EXTRA_CFLAGS='-g $(OPT_FLAGS)' \
302 OUTPUT=$(BUILD_DIR)/bpftool/ \
303 LIBBPF_OUTPUT=$(BUILD_DIR)/libbpf/ \
304 LIBBPF_DESTDIR=$(SCRATCH_DIR)/ \
305 prefix= DESTDIR=$(SCRATCH_DIR)/ install-bin
306endif
307
308all: docs
309
310docs:
311 $(Q)RST2MAN_OPTS="--exit-status=1" $(MAKE) $(submake_extras) \
312 -f Makefile.docs \
313 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
314
315docs-clean:
316 $(Q)$(MAKE) $(submake_extras) \
317 -f Makefile.docs \
318 prefix= OUTPUT=$(OUTPUT)/ DESTDIR=$(OUTPUT)/ $@
319
320$(BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
321 $(APIDIR)/linux/bpf.h \
322 | $(BUILD_DIR)/libbpf
323 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) OUTPUT=$(BUILD_DIR)/libbpf/ \
324 EXTRA_CFLAGS='-g $(OPT_FLAGS) $(SAN_CFLAGS)' \
325 EXTRA_LDFLAGS='$(SAN_LDFLAGS)' \
326 DESTDIR=$(SCRATCH_DIR) prefix= all install_headers
327
328ifneq ($(BPFOBJ),$(HOST_BPFOBJ))
329$(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \
330 $(APIDIR)/linux/bpf.h \
331 | $(HOST_BUILD_DIR)/libbpf
332 $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \
333 EXTRA_CFLAGS='-g $(OPT_FLAGS)' ARCH= CROSS_COMPILE= \
334 OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \
335 CC="$(HOSTCC)" LD="$(HOSTLD)" \
336 DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers
337endif
338
339$(INCLUDE_DIR)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR)
340ifeq ($(VMLINUX_H),)
341 $(call msg,GEN,,$@)
342 $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@
343else
344 $(call msg,CP,,$@)
345 $(Q)cp "$(VMLINUX_H)" $@
346endif
347
348$(RESOLVE_BTFIDS): $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/resolve_btfids \
349 $(TOOLSDIR)/bpf/resolve_btfids/main.c \
350 $(TOOLSDIR)/lib/rbtree.c \
351 $(TOOLSDIR)/lib/zalloc.c \
352 $(TOOLSDIR)/lib/string.c \
353 $(TOOLSDIR)/lib/ctype.c \
354 $(TOOLSDIR)/lib/str_error_r.c
355 $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/resolve_btfids \
356 CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)" \
357 LIBBPF_INCLUDE=$(HOST_INCLUDE_DIR) \
358 OUTPUT=$(HOST_BUILD_DIR)/resolve_btfids/ BPFOBJ=$(HOST_BPFOBJ)
359
360# Get Clang's default includes on this system, as opposed to those seen by
361# '--target=bpf'. This fixes "missing" files on some architectures/distros,
362# such as asm/byteorder.h, asm/socket.h, asm/sockios.h, sys/cdefs.h etc.
363#
364# Use '-idirafter': Don't interfere with include mechanics except where the
365# build would have failed anyways.
366define get_sys_includes
367$(shell $(1) $(2) -v -E - </dev/null 2>&1 \
368 | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') \
369$(shell $(1) $(2) -dM -E - </dev/null | grep '__riscv_xlen ' | awk '{printf("-D__riscv_xlen=%d -D__BITS_PER_LONG=%d", $$3, $$3)}') \
370$(shell $(1) $(2) -dM -E - </dev/null | grep '__loongarch_grlen ' | awk '{printf("-D__BITS_PER_LONG=%d", $$3)}')
371endef
372
373# Determine target endianness.
374IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \
375 grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__')
376MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian)
377
378ifneq ($(CROSS_COMPILE),)
379CLANG_TARGET_ARCH = --target=$(notdir $(CROSS_COMPILE:%-=%))
380endif
381
382CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARCH))
383BPF_CFLAGS = -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \
384 -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \
385 -I$(abspath $(OUTPUT)/../usr/include)
386# TODO: enable me -Wsign-compare
387
388CLANG_CFLAGS = $(CLANG_SYS_INCLUDES) \
389 -Wno-compare-distinct-pointer-types
390
391$(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS += -fno-inline
392$(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS += -fno-inline
393
394$(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
395$(OUTPUT)/cgroup_getset_retval_hooks.o: cgroup_getset_retval_hooks.h
396
397# Build BPF object using Clang
398# $1 - input .c file
399# $2 - output .o file
400# $3 - CFLAGS
401define CLANG_BPF_BUILD_RULE
402 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
403 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v3 -o $2
404endef
405# Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32
406define CLANG_NOALU32_BPF_BUILD_RULE
407 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
408 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v2 -o $2
409endef
410# Similar to CLANG_BPF_BUILD_RULE, but with cpu-v4
411define CLANG_CPUV4_BPF_BUILD_RULE
412 $(call msg,CLNG-BPF,$(TRUNNER_BINARY),$2)
413 $(Q)$(CLANG) $3 -O2 --target=bpf -c $1 -mcpu=v4 -o $2
414endef
415# Build BPF object using GCC
416define GCC_BPF_BUILD_RULE
417 $(call msg,GCC-BPF,$(TRUNNER_BINARY),$2)
418 $(Q)$(BPF_GCC) $3 -O2 -c $1 -o $2
419endef
420
421SKEL_BLACKLIST := btf__% test_pinning_invalid.c test_sk_assign.c
422
423LINKED_SKELS := test_static_linked.skel.h linked_funcs.skel.h \
424 linked_vars.skel.h linked_maps.skel.h \
425 test_subskeleton.skel.h test_subskeleton_lib.skel.h \
426 test_usdt.skel.h
427
428LSKELS := fentry_test.c fexit_test.c fexit_sleep.c atomics.c \
429 trace_printk.c trace_vprintk.c map_ptr_kern.c \
430 core_kern.c core_kern_overflow.c test_ringbuf.c \
431 test_ringbuf_map_key.c
432
433# Generate both light skeleton and libbpf skeleton for these
434LSKELS_EXTRA := test_ksyms_module.c test_ksyms_weak.c kfunc_call_test.c \
435 kfunc_call_test_subprog.c
436SKEL_BLACKLIST += $$(LSKELS)
437
438test_static_linked.skel.h-deps := test_static_linked1.bpf.o test_static_linked2.bpf.o
439linked_funcs.skel.h-deps := linked_funcs1.bpf.o linked_funcs2.bpf.o
440linked_vars.skel.h-deps := linked_vars1.bpf.o linked_vars2.bpf.o
441linked_maps.skel.h-deps := linked_maps1.bpf.o linked_maps2.bpf.o
442# In the subskeleton case, we want the test_subskeleton_lib.subskel.h file
443# but that's created as a side-effect of the skel.h generation.
444test_subskeleton.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o test_subskeleton.bpf.o
445test_subskeleton_lib.skel.h-deps := test_subskeleton_lib2.bpf.o test_subskeleton_lib.bpf.o
446test_usdt.skel.h-deps := test_usdt.bpf.o test_usdt_multispec.bpf.o
447xsk_xdp_progs.skel.h-deps := xsk_xdp_progs.bpf.o
448xdp_hw_metadata.skel.h-deps := xdp_hw_metadata.bpf.o
449xdp_features.skel.h-deps := xdp_features.bpf.o
450
451LINKED_BPF_SRCS := $(patsubst %.bpf.o,%.c,$(foreach skel,$(LINKED_SKELS),$($(skel)-deps)))
452
453# Set up extra TRUNNER_XXX "temporary" variables in the environment (relies on
454# $eval()) and pass control to DEFINE_TEST_RUNNER_RULES.
455# Parameters:
456# $1 - test runner base binary name (e.g., test_progs)
457# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
458define DEFINE_TEST_RUNNER
459
460TRUNNER_OUTPUT := $(OUTPUT)$(if $2,/)$2
461TRUNNER_BINARY := $1$(if $2,-)$2
462TRUNNER_TEST_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.test.o, \
463 $$(notdir $$(wildcard $(TRUNNER_TESTS_DIR)/*.c)))
464TRUNNER_EXTRA_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.o, \
465 $$(filter %.c,$(TRUNNER_EXTRA_SOURCES)))
466TRUNNER_EXTRA_HDRS := $$(filter %.h,$(TRUNNER_EXTRA_SOURCES))
467TRUNNER_TESTS_HDR := $(TRUNNER_TESTS_DIR)/tests.h
468TRUNNER_BPF_SRCS := $$(notdir $$(wildcard $(TRUNNER_BPF_PROGS_DIR)/*.c))
469TRUNNER_BPF_OBJS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.bpf.o, $$(TRUNNER_BPF_SRCS))
470TRUNNER_BPF_SKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.skel.h, \
471 $$(filter-out $(SKEL_BLACKLIST) $(LINKED_BPF_SRCS),\
472 $$(TRUNNER_BPF_SRCS)))
473TRUNNER_BPF_LSKELS := $$(patsubst %.c,$$(TRUNNER_OUTPUT)/%.lskel.h, $$(LSKELS) $$(LSKELS_EXTRA))
474TRUNNER_BPF_SKELS_LINKED := $$(addprefix $$(TRUNNER_OUTPUT)/,$(LINKED_SKELS))
475TEST_GEN_FILES += $$(TRUNNER_BPF_OBJS)
476
477# Evaluate rules now with extra TRUNNER_XXX variables above already defined
478$$(eval $$(call DEFINE_TEST_RUNNER_RULES,$1,$2))
479
480endef
481
482# Using TRUNNER_XXX variables, provided by callers of DEFINE_TEST_RUNNER and
483# set up by DEFINE_TEST_RUNNER itself, create test runner build rules with:
484# $1 - test runner base binary name (e.g., test_progs)
485# $2 - test runner extra "flavor" (e.g., no_alu32, cpuv4, gcc-bpf, etc)
486define DEFINE_TEST_RUNNER_RULES
487
488ifeq ($($(TRUNNER_OUTPUT)-dir),)
489$(TRUNNER_OUTPUT)-dir := y
490$(TRUNNER_OUTPUT):
491 $$(call msg,MKDIR,,$$@)
492 $(Q)mkdir -p $$@
493endif
494
495# ensure we set up BPF objects generation rule just once for a given
496# input/output directory combination
497ifeq ($($(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs),)
498$(TRUNNER_BPF_PROGS_DIR)$(if $2,-)$2-bpfobjs := y
499$(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.bpf.o: \
500 $(TRUNNER_BPF_PROGS_DIR)/%.c \
501 $(TRUNNER_BPF_PROGS_DIR)/*.h \
502 $$(INCLUDE_DIR)/vmlinux.h \
503 $(wildcard $(BPFDIR)/bpf_*.h) \
504 $(wildcard $(BPFDIR)/*.bpf.h) \
505 | $(TRUNNER_OUTPUT) $$(BPFOBJ)
506 $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@, \
507 $(TRUNNER_BPF_CFLAGS))
508
509$(TRUNNER_BPF_SKELS): %.skel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
510 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
511 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked1.o) $$<
512 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked2.o) $$(<:.o=.linked1.o)
513 $(Q)$$(BPFTOOL) gen object $$(<:.o=.linked3.o) $$(<:.o=.linked2.o)
514 $(Q)diff $$(<:.o=.linked2.o) $$(<:.o=.linked3.o)
515 $(Q)$$(BPFTOOL) gen skeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$@
516 $(Q)$$(BPFTOOL) gen subskeleton $$(<:.o=.linked3.o) name $$(notdir $$(<:.bpf.o=)) > $$(@:.skel.h=.subskel.h)
517
518$(TRUNNER_BPF_LSKELS): %.lskel.h: %.bpf.o $(BPFTOOL) | $(TRUNNER_OUTPUT)
519 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
520 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked1.o) $$<
521 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked2.o) $$(<:.o=.llinked1.o)
522 $(Q)$$(BPFTOOL) gen object $$(<:.o=.llinked3.o) $$(<:.o=.llinked2.o)
523 $(Q)diff $$(<:.o=.llinked2.o) $$(<:.o=.llinked3.o)
524 $(Q)$$(BPFTOOL) gen skeleton -L $$(<:.o=.llinked3.o) name $$(notdir $$(<:.bpf.o=_lskel)) > $$@
525
526$(TRUNNER_BPF_SKELS_LINKED): $(TRUNNER_BPF_OBJS) $(BPFTOOL) | $(TRUNNER_OUTPUT)
527 $$(call msg,LINK-BPF,$(TRUNNER_BINARY),$$(@:.skel.h=.bpf.o))
528 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked1.o) $$(addprefix $(TRUNNER_OUTPUT)/,$$($$(@F)-deps))
529 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked1.o)
530 $(Q)$$(BPFTOOL) gen object $$(@:.skel.h=.linked3.o) $$(@:.skel.h=.linked2.o)
531 $(Q)diff $$(@:.skel.h=.linked2.o) $$(@:.skel.h=.linked3.o)
532 $$(call msg,GEN-SKEL,$(TRUNNER_BINARY),$$@)
533 $(Q)$$(BPFTOOL) gen skeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$@
534 $(Q)$$(BPFTOOL) gen subskeleton $$(@:.skel.h=.linked3.o) name $$(notdir $$(@:.skel.h=)) > $$(@:.skel.h=.subskel.h)
535endif
536
537# ensure we set up tests.h header generation rule just once
538ifeq ($($(TRUNNER_TESTS_DIR)-tests-hdr),)
539$(TRUNNER_TESTS_DIR)-tests-hdr := y
540$(TRUNNER_TESTS_HDR): $(TRUNNER_TESTS_DIR)/*.c
541 $$(call msg,TEST-HDR,$(TRUNNER_BINARY),$$@)
542 $$(shell (echo '/* Generated header, do not edit */'; \
543 sed -n -E 's/^void (serial_)?test_([a-zA-Z0-9_]+)\((void)?\).*/DEFINE_TEST(\2)/p' \
544 $(TRUNNER_TESTS_DIR)/*.c | sort ; \
545 ) > $$@)
546endif
547
548# compile individual test files
549# Note: we cd into output directory to ensure embedded BPF object is found
550$(TRUNNER_TEST_OBJS): $(TRUNNER_OUTPUT)/%.test.o: \
551 $(TRUNNER_TESTS_DIR)/%.c \
552 $(TRUNNER_EXTRA_HDRS) \
553 $(TRUNNER_BPF_OBJS) \
554 $(TRUNNER_BPF_SKELS) \
555 $(TRUNNER_BPF_LSKELS) \
556 $(TRUNNER_BPF_SKELS_LINKED) \
557 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
558 $$(call msg,TEST-OBJ,$(TRUNNER_BINARY),$$@)
559 $(Q)cd $$(@D) && $$(CC) -I. $$(CFLAGS) -c $(CURDIR)/$$< $$(LDLIBS) -o $$(@F)
560
561$(TRUNNER_EXTRA_OBJS): $(TRUNNER_OUTPUT)/%.o: \
562 %.c \
563 $(TRUNNER_EXTRA_HDRS) \
564 $(TRUNNER_TESTS_HDR) \
565 $$(BPFOBJ) | $(TRUNNER_OUTPUT)
566 $$(call msg,EXT-OBJ,$(TRUNNER_BINARY),$$@)
567 $(Q)$$(CC) $$(CFLAGS) -c $$< $$(LDLIBS) -o $$@
568
569# non-flavored in-srctree builds receive special treatment, in particular, we
570# do not need to copy extra resources (see e.g. test_btf_dump_case())
571$(TRUNNER_BINARY)-extras: $(TRUNNER_EXTRA_FILES) | $(TRUNNER_OUTPUT)
572ifneq ($2:$(OUTPUT),:$(shell pwd))
573 $$(call msg,EXT-COPY,$(TRUNNER_BINARY),$(TRUNNER_EXTRA_FILES))
574 $(Q)rsync -aq $$^ $(TRUNNER_OUTPUT)/
575endif
576
577$(OUTPUT)/$(TRUNNER_BINARY): $(TRUNNER_TEST_OBJS) \
578 $(TRUNNER_EXTRA_OBJS) $$(BPFOBJ) \
579 $(RESOLVE_BTFIDS) \
580 $(TRUNNER_BPFTOOL) \
581 | $(TRUNNER_BINARY)-extras
582 $$(call msg,BINARY,,$$@)
583 $(Q)$$(CC) $$(CFLAGS) $$(filter %.a %.o,$$^) $$(LDLIBS) -o $$@
584 $(Q)$(RESOLVE_BTFIDS) --btf $(TRUNNER_OUTPUT)/btf_data.bpf.o $$@
585 $(Q)ln -sf $(if $2,..,.)/tools/build/bpftool/$(USE_BOOTSTRAP)bpftool \
586 $(OUTPUT)/$(if $2,$2/)bpftool
587
588endef
589
590# Define test_progs test runner.
591TRUNNER_TESTS_DIR := prog_tests
592TRUNNER_BPF_PROGS_DIR := progs
593TRUNNER_EXTRA_SOURCES := test_progs.c \
594 cgroup_helpers.c \
595 trace_helpers.c \
596 network_helpers.c \
597 testing_helpers.c \
598 btf_helpers.c \
599 cap_helpers.c \
600 unpriv_helpers.c \
601 netlink_helpers.c \
602 test_loader.c \
603 xsk.c \
604 disasm.c \
605 json_writer.c \
606 flow_dissector_load.h \
607 ip_check_defrag_frags.h
608TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
609 $(OUTPUT)/liburandom_read.so \
610 $(OUTPUT)/xdp_synproxy \
611 $(OUTPUT)/sign-file \
612 $(OUTPUT)/uprobe_multi \
613 ima_setup.sh \
614 verify_sig_setup.sh \
615 $(wildcard progs/btf_dump_test_case_*.c) \
616 $(wildcard progs/*.bpf.o)
617TRUNNER_BPF_BUILD_RULE := CLANG_BPF_BUILD_RULE
618TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS) -DENABLE_ATOMICS_TESTS
619$(eval $(call DEFINE_TEST_RUNNER,test_progs))
620
621# Define test_progs-no_alu32 test runner.
622TRUNNER_BPF_BUILD_RULE := CLANG_NOALU32_BPF_BUILD_RULE
623TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
624$(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32))
625
626# Define test_progs-cpuv4 test runner.
627ifneq ($(CLANG_CPUV4),)
628TRUNNER_BPF_BUILD_RULE := CLANG_CPUV4_BPF_BUILD_RULE
629TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(CLANG_CFLAGS)
630$(eval $(call DEFINE_TEST_RUNNER,test_progs,cpuv4))
631endif
632
633# Define test_progs BPF-GCC-flavored test runner.
634ifneq ($(BPF_GCC),)
635TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE
636TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc,)
637$(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc))
638endif
639
640# Define test_maps test runner.
641TRUNNER_TESTS_DIR := map_tests
642TRUNNER_BPF_PROGS_DIR := progs
643TRUNNER_EXTRA_SOURCES := test_maps.c
644TRUNNER_EXTRA_FILES :=
645TRUNNER_BPF_BUILD_RULE := $$(error no BPF objects should be built)
646TRUNNER_BPF_CFLAGS :=
647$(eval $(call DEFINE_TEST_RUNNER,test_maps))
648
649# Define test_verifier test runner.
650# It is much simpler than test_maps/test_progs and sufficiently different from
651# them (e.g., test.h is using completely pattern), that it's worth just
652# explicitly defining all the rules explicitly.
653verifier/tests.h: verifier/*.c
654 $(shell ( cd verifier/; \
655 echo '/* Generated header, do not edit */'; \
656 echo '#ifdef FILL_ARRAY'; \
657 ls *.c 2> /dev/null | sed -e 's@\(.*\)@#include \"\1\"@'; \
658 echo '#endif' \
659 ) > verifier/tests.h)
660$(OUTPUT)/test_verifier: test_verifier.c verifier/tests.h $(BPFOBJ) | $(OUTPUT)
661 $(call msg,BINARY,,$@)
662 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
663
664# Include find_bit.c to compile xskxceiver.
665EXTRA_SRC := $(TOOLSDIR)/lib/find_bit.c
666$(OUTPUT)/xskxceiver: $(EXTRA_SRC) xskxceiver.c xskxceiver.h $(OUTPUT)/xsk.o $(OUTPUT)/xsk_xdp_progs.skel.h $(BPFOBJ) | $(OUTPUT)
667 $(call msg,BINARY,,$@)
668 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
669
670$(OUTPUT)/xdp_hw_metadata: xdp_hw_metadata.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xsk.o $(OUTPUT)/xdp_hw_metadata.skel.h | $(OUTPUT)
671 $(call msg,BINARY,,$@)
672 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
673
674$(OUTPUT)/xdp_features: xdp_features.c $(OUTPUT)/network_helpers.o $(OUTPUT)/xdp_features.skel.h | $(OUTPUT)
675 $(call msg,BINARY,,$@)
676 $(Q)$(CC) $(CFLAGS) $(filter %.a %.o %.c,$^) $(LDLIBS) -o $@
677
678# Make sure we are able to include and link libbpf against c++.
679$(OUTPUT)/test_cpp: test_cpp.cpp $(OUTPUT)/test_core_extern.skel.h $(BPFOBJ)
680 $(call msg,CXX,,$@)
681 $(Q)$(CXX) $(CFLAGS) $(filter %.a %.o %.cpp,$^) $(LDLIBS) -o $@
682
683# Benchmark runner
684$(OUTPUT)/bench_%.o: benchs/bench_%.c bench.h $(BPFOBJ)
685 $(call msg,CC,,$@)
686 $(Q)$(CC) $(CFLAGS) -O2 -c $(filter %.c,$^) $(LDLIBS) -o $@
687$(OUTPUT)/bench_rename.o: $(OUTPUT)/test_overhead.skel.h
688$(OUTPUT)/bench_trigger.o: $(OUTPUT)/trigger_bench.skel.h
689$(OUTPUT)/bench_ringbufs.o: $(OUTPUT)/ringbuf_bench.skel.h \
690 $(OUTPUT)/perfbuf_bench.skel.h
691$(OUTPUT)/bench_bloom_filter_map.o: $(OUTPUT)/bloom_filter_bench.skel.h
692$(OUTPUT)/bench_bpf_loop.o: $(OUTPUT)/bpf_loop_bench.skel.h
693$(OUTPUT)/bench_strncmp.o: $(OUTPUT)/strncmp_bench.skel.h
694$(OUTPUT)/bench_bpf_hashmap_full_update.o: $(OUTPUT)/bpf_hashmap_full_update_bench.skel.h
695$(OUTPUT)/bench_local_storage.o: $(OUTPUT)/local_storage_bench.skel.h
696$(OUTPUT)/bench_local_storage_rcu_tasks_trace.o: $(OUTPUT)/local_storage_rcu_tasks_trace_bench.skel.h
697$(OUTPUT)/bench_local_storage_create.o: $(OUTPUT)/bench_local_storage_create.skel.h
698$(OUTPUT)/bench_bpf_hashmap_lookup.o: $(OUTPUT)/bpf_hashmap_lookup.skel.h
699$(OUTPUT)/bench_htab_mem.o: $(OUTPUT)/htab_mem_bench.skel.h
700$(OUTPUT)/bench.o: bench.h testing_helpers.h $(BPFOBJ)
701$(OUTPUT)/bench: LDLIBS += -lm
702$(OUTPUT)/bench: $(OUTPUT)/bench.o \
703 $(TESTING_HELPERS) \
704 $(TRACE_HELPERS) \
705 $(CGROUP_HELPERS) \
706 $(OUTPUT)/bench_count.o \
707 $(OUTPUT)/bench_rename.o \
708 $(OUTPUT)/bench_trigger.o \
709 $(OUTPUT)/bench_ringbufs.o \
710 $(OUTPUT)/bench_bloom_filter_map.o \
711 $(OUTPUT)/bench_bpf_loop.o \
712 $(OUTPUT)/bench_strncmp.o \
713 $(OUTPUT)/bench_bpf_hashmap_full_update.o \
714 $(OUTPUT)/bench_local_storage.o \
715 $(OUTPUT)/bench_local_storage_rcu_tasks_trace.o \
716 $(OUTPUT)/bench_bpf_hashmap_lookup.o \
717 $(OUTPUT)/bench_local_storage_create.o \
718 $(OUTPUT)/bench_htab_mem.o \
719 #
720 $(call msg,BINARY,,$@)
721 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
722
723$(OUTPUT)/veristat.o: $(BPFOBJ)
724$(OUTPUT)/veristat: $(OUTPUT)/veristat.o
725 $(call msg,BINARY,,$@)
726 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@
727
728$(OUTPUT)/uprobe_multi: uprobe_multi.c
729 $(call msg,BINARY,,$@)
730 $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ $(LDLIBS) -o $@
731
732EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
733 prog_tests/tests.h map_tests/tests.h verifier/tests.h \
734 feature bpftool \
735 $(addprefix $(OUTPUT)/,*.o *.skel.h *.lskel.h *.subskel.h \
736 no_alu32 cpuv4 bpf_gcc bpf_testmod.ko \
737 liburandom_read.so)
738
739.PHONY: docs docs-clean
740
741# Delete partially updated (corrupted) files on error
742.DELETE_ON_ERROR:
743
744DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
745override define INSTALL_RULE
746 $(DEFAULT_INSTALL_RULE)
747 @for DIR in $(TEST_INST_SUBDIRS); do \
748 mkdir -p $(INSTALL_PATH)/$$DIR; \
749 rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
750 done
751endef